Unit: Reversible and Irreversible ChangesGrade VScience Ms. Khaula Rizwan

Mixtures & Solutions

MATTER

is

solid liquid gas

melts to

freezes to

evaporates to

condenses to

anything that has mass and takes

up space

can be

can be

can be

MATTER FACT

Water can be found naturally on earth as a solid, liquid, and a gas.

MIXTURES

Two or more kinds of

substances combined together

are

solutions

separated

can be

can be

by

using sievesusing magnets

evaporation

sorting

one kind of material dissolves

in another

made when

cannot be separated by

filtration

which

filtration

How would you separate a mixture of sand and water?

How would you separate a mixture of sand and water? ANSWER:Pour the mixture through

a filter. The water will go throughthe filter leaving the sand behind.

ANSWER:Pour the mixture through

a filter. The water will go throughthe filter leaving the sand behind.

How would you separate a mixture of iron fillings and sand?

How would you separate a mixture of iron and sand? ANSWER:Use a magnet to separate

the iron fillings from the sand.

ANSWER:Use a magnet to separate

the iron fillings from the sand.

How would you separate a mixture of salt and water?

HINT:

Salt and water form a solution.

HINT:

Salt and water form a solution.

How would you separate a mixture of salt and water?

HINT:

Salt and water form a solution.

HINT:

Salt and water form a solution.

ANSWER:Heat the water until the

water evaporates. The saltwill be left behind in the dish or

beaker.

ANSWER:Heat the water until the

water evaporates. The saltwill be left behind in the dish or

beaker.

Alright Young Scientists!!

Now its time to understand some very important key words when we are learning about SOLUTION.

Solute Solvent

Solution

FOUR IMPORTANT KEY WORDS

Saturation

Solute (salt)

Solvent (water)

A Salt Water Solution

Solute

• Any substance that dissolves in a liquid

Can you give examples?

Solvent

• The liquid in which other substances can be dissolved

Examples?

So how will you define solution?

Solution

Solution

• A mixture that is formed when two or more substances (solutes) are dissolved in the liquid (solvent).

Solution= Solutes + Solvent

Example:

Sugar in water= Sugar + Water

In a salt water solution…

• Is salt the solute or the solvent?– Solute

• Is water the solute or the solvent?– Solvent

• What does the solute do?– Gets dissolved

• What does the solvent do?– Does the dissolving

INVESTIGATING SOLUTIONS

1. What is a saturated solution?

____________________________________________________

____________________________________________________

___________________

2. How can you tell when a solution is saturated?

_________________________________________

A solution in which no more solid material will

dissolve; additional material settles to the

bottom of the container (beaker/dish)

I can tell when no more material will dissolve

in the solution.

Which is a saturated solution?

A B

How do youHow do youknow?know?

Which is a saturated solution?

A B

No morematerial willdissolve in solution A.

Lets Recap!

MATTER

is

can be

can be

can be

MIXTURESare

Separated by

can be

can beby

made when which